Results 61 to 70 of about 74,904 (235)

The THESEUS Space Mission and the Infrared Telescope Calibration Unit

Astronomische Nachrichten, EarlyView.
ABSTRACT The Transient High‐Energy Sky and Early Universe Surveyor (THESEUS) is an ESA M7 mission concept currently in Phase A, designed to exploit gamma‐ray bursts to probe the early Universe while advancing multi‐messenger and time‐domain astrophysics. To achieve its ambitious goals, THESEUS will combine wide‐band x‐ray and gamma‐ray monitors with an
András Péter Joó, Rebeka Gyöngyi Kiss, Lorenzo Amati, Bendegúz Koncz, Örs Detre, Gyula Zilizi, Zsolt Bagoly, István I. Rácz, Sándor Pintér, L. Viktor Tóth   +9 more
wiley   +1 more source

Theoretical Modeling of the Exceptional GRB 221009A Afterglow

The Astrophysical Journal Letters
The extraordinary gamma-ray burst GRB 221009A provides a great opportunity to investigate the enigmatic origin and evolution of gamma-ray bursts (GRBs). However, the complexity of the observations associated with this GRB provides significant challenges ...
Luca Foffano, Marco Tavani, Giovanni Piano   +2 more
doaj   +1 more source

H.E.S.S.-II - Gamma ray astronomy from 20 GeV to hundreds of TeV’s

EPJ Web of Conferences, 2017
Since the commissioning of the fifth, largest telescope (28 m diameter) in December 2012, H.E.S.S. II is the only hybrid array of Imaging Atmospheric Cherenkov Telescopes operating in the energy range ~ 20 GeV to ~ 100 TeV.
de Naurois Mathieu
doaj   +1 more source

A Multiwavelength Investigation of PSR J2229+6114 and its Pulsar Wind Nebula in the Radio, X-Ray, and Gamma-Ray Bands

The Astrophysical Journal, 2023
G106.3+2.7, commonly considered to be a composite supernova remnant (SNR), is characterized by a boomerang-shaped pulsar wind nebula (PWN) and two distinct (“head” and “tail”) regions in the radio band. A discovery of very-high-energy gamma-ray emission (
I. Pope, K. Mori, M. Abdelmaguid, J. D. Gelfand, S. P. Reynolds, S. Safi-Harb, C. J. Hailey, H. An, NuSTAR Collaboration, P. Bangale, P. Batista, W. Benbow, J. H. Buckley, M. Capasso, J. L. Christiansen, A. J. Chromey, A. Falcone, Q. Feng, J. P. Finley, G. M Foote, G. Gallagher, W. F Hanlon, D. Hanna, O. Hervet, J. Holder, T. B. Humensky, W. Jin, P. Kaaret, M. Kertzman, D. Kieda, T. K. Kleiner, N. Korzoun, F. Krennrich, S. Kumar, M. J. Lang, G. Maier, C. E McGrath, C. L. Mooney, P. Moriarty, R. Mukherjee, S. O’Brien, R. A. Ong, N. Park, S. R. Patel, K. Pfrang, M. Pohl, E. Pueschel, J. Quinn, K. Ragan, P. T. Reynolds, E. Roache, I. Sadeh, L. Saha, G. H. Sembroski, D. Tak, J. V. Tucci, A. Weinstein, D. A. Williams, J. Woo, VERITAS Collaboration   +59 more
doaj   +1 more source

Analysis Methods for Gamma-Ray Astronomy

, 2023
The launch of the Fermi satellite in 2008, with its Large Area Telescope (LAT) on board, has opened a new era for the study of gamma-ray sources at GeV ($10^9$ eV) energies. Similarly, the commissioning of the third generation of imaging atmospheric Cherenkov telescopes (IACTs) - H.E.S.S., MAGIC, and VERITAS - in the mid-2000's has firmly established ...
Malyshev, Denys, Mohrmann, Lars
openaire   +2 more sources

Repeating Nuclear Transients From Repeating Partial Tidal Disruption Events

Astronomische Nachrichten, EarlyView.
ABSTRACT Extragalactic nuclear transients that exhibit repeating outbursts can be modeled as the repeated dynamical interaction between bound stars and supermassive black holes (SMBHs). A subset of these transients, with recurrence timescales of months‐to‐years, have been explained as accretion flares from the repeated tidal stripping of a star by an ...
Ananya Bandopadhyay, Eric R. Coughlin, Julia Fancher, C. J. Nixon, Dheeraj R. Pasham   +4 more
wiley   +1 more source

TeV Afterglows of Gamma-Ray Bursts: Theoretical Analysis and Prospects for Future Observations

The Astrophysical Journal
Recent detections of gamma-ray bursts (GRBs) at TeV energies opened new prospects for investigating radiative environments and particle acceleration mechanisms under extreme conditions.
Luca Foffano, Marco Tavani
doaj   +1 more source

Galactic cosmic ray spectral measurements with the DAMPE space mission [PDF]

EPJ Web of Conferences
The space-based DAMPE (DArk Matter Particle Explorer) detector has been taking data since its successful launch in December 2015. Its main scientific goals include the indirect search for dark matter signatures in the cosmic electron and gamma-ray ...
Cagnoli Irene, De Mitri Ivan
doaj   +1 more source

Present and future gamma-ray burst experiments [PDF]

, 1998
Gamma-ray burst counterpart studies require small, prompt error boxes. Today, there are several missions which can provide them: BeppoSAX, the Rossi X-Ray Timing Explorer, and the 3rd Interplanetary Network.
Hurley, K.
core   +2 more sources

Feasibility Study for Application of Digitized Henize Mt. Wilson Michigan Southern Sky Hα$$ \boldsymbol{\alpha} $$ Survey Low‐Dispersive Spectral Plates for Searches for Anomalous and Highly Redshifted Objects

Astronomische Nachrichten, EarlyView.
ABSTRACT The goal of this study is to confirm the feasibility of the use of digitized low dispersive MtWilson Michigan Southern Sky Hα$$ \alpha $$ survey astronomical photographic plates for modern astrophysical research. The detection of highly redshifted objects, such as early galaxies and quasars, is fundamental to understanding the universe's ...
Tauseef Ahmad Zafar, René Hudec, Marta Mara Merono Vidagany, Fehmi Mejri   +3 more
wiley   +1 more source